n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 27 |
4 | 98 |
5 | 315 |
6 | 912 |
7 | 2456 |
8 | 6210 |
9 | 14937 |
10 | 34390 |
11 | 76317 |
12 | 163896 |
13 | 342062 |
14 | 695736 |
15 | 1382880 |
16 | 2691586 |
17 | 5139906 |
18 | 9644622 |
19 | 17808040 |
20 | 32393370 |
21 | 58113312 |
22 | 102914152 |
23 | 180062622 |
24 | 311488920 |
25 | 533124225 |
26 | 903324372 |
27 | 1516110165 |
28 | 2521780688 |
29 | 4158863310 |
30 | 6803237280 |
31 | 11043320922 |
32 | 17794350786 |
[1,6,27,98,315,912,2456,6210,14937,34390,76317, 163896,342062,695736,1382880,2691586,5139906, 9644622,17808040,32393370,58113312,102914152, 180062622,311488920,533124225,903324372, 1516110165,2521780688,4158863310,6803237280, 11043320922,17794350786] |